Search for dissertations about: "matched case-control"

Showing result 21 - 25 of 183 swedish dissertations containing the words matched case-control.

2. 21. Incidence and prognosis of differentiated thyroid cancer in Sweden

   Author : Catharina Ihre Lundgren; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Differentiated thyroid cancer; papillary; follicular; nested case-control study; population-based; risk factors; prognosis; survival; TNM.;

   Abstract : Non-medullary differentiated thyroid cancer (DTC) is a rare disorder but, nevertheless, among the most common cancers in individuals below 40 years of age. DTC consists of papillary (PTC) and follicular (FTC) thyroid cancer. The prognosis is excellent with an overall 10-year survival of 90 %. READ MORE

4. 22. Brain maturation, cognitive tasks, and quantitative electroencephalography : a study in children with attention deficit hyperactive disorder

   Author : Eman Mohamed El-Sayed; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ADHD; twin study; twin design; case control study; maturation; developmental trajectories; maturational lag hypothesis; brain immaturity; QEEG; Vigilance Task; Delay Task;

   Abstract : Attention Deficit Hyperactivity Disorder (ADHD) is one of the most common psychiatric disorders of childhood. Despite a long history, widespread clinical acceptance, and extensive research, the diagnosis and treatment are still controversial. READ MORE

5. 23. Non-Hodgkin's lymphoma : a search for causes

   Author : Johanna Adami; Karolinska Institutet; Karolinska Institutet; []
   Keywords : non-Hodgkin s Iymphoma; malignant melanoma; squamous cell skin cancer; case control study; cohort study; ultraviolet light; maternal factors; perinatalfactors; tobacco use; blood transfusion; occupation.;

   Abstract : The aim of this thesis was to investigate some factors of possible importance for the development of non-Hodgkin's lymphoma (NHL), namely ultraviolet (UV) light, maternal and perinatal characteristics, blood transfusions, and smoking. To test the UV light hypothesis, a cohort study of secondary occurrence of skin cancer (malignant melanoma and squamous cell skin cancer) following NHL, and of NHL following skin cancer, was executed. READ MORE

6. 24. Chromosome aberrations and environmental exposures in acute leukemia

   Author : Ragnhild Rosengren Lindquist; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Acute leukemia; chromosome 3; chromosome 8; fragile site; occupational exposure; mutagen exposure; case-control study; trisomy; benzene; organic solvent; petroleum; epidemiology; environmental carcinogens; painter; driver;

   Abstract : The aims of this thesis are to evaluate the role of environmental exposures, especially professional exposure to organic solvents and petroleum products in the etiology of acute leukemia and to investigate if there is a correlation between the exposure to a specific leukemogen factor and a clonal chromosome aberration of the leukemic cells. Papers I and II present results of a case-control study of environmental exposures, in all occupations during life-time, medical treatments with medicines, chemotherapy and radiation, tobacco-use and the exposure to chemical compounds in private life in 120 patients with acute leukemia and of 120 controls, matched for age (+ 4 years), residence and sex. READ MORE

7. 25. Spontaneous abortion : risk factors and measurement of exposures

   Author : Lena George; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Case-control study; caffeine; cotinine; environmental tobacco smoke; epidemiology; fetal karyotype; folate; maternal smoking; pregnancy; repeated spontaneous abortion; risk assessment; smoking cessation; spontaneous abortion; validation study;

   Abstract : The overall objectives of this thesis were to increase the understanding of the etiology of spontaneous abortion and repeated spontaneous abortion, and to evaluate possibilities of exposure assessment during pregnancy. Data from a Swedish population-based case-control study of spontaneous abortion, performed in Uppsala County 1996-98, formed the base for the three first studies of the thesis. READ MORE